Firstable, EXCUSE MY ENGLISH, im not very good at it, but i relly need help on this guys,
I just recently buy a new nexus 5, but im having a lot of issues with the screen, i used it for like 6 days and then it comes some issues, the phone its completily stock (stock kernel, no custom rom, no root)....and the screen when a litlle bit carzy, the Nav Bar apear on the middle of the screen, for like 2 secs, so i do not put to much attention to it, next days the same and everything its become happening like 2 hours, then 1, the 20 secs, until the screen goes completly colored of little color points, and it stays like that for like 20 mins, then it went back to normal, now a days, the phone gets 2 hours of that color dots, then normal for like 2 mins, but it keeps flickering, so its almost impposible to use the cellphone like that.
No, it doesnt have warranty, so my questions, it could be the screen conector? so i can open the cellphone, and with a video on "how to open" tried by my self? or it could be the motherboard? or change the screen? if a flash the stock rom from google it could help?
Some times it hapens like this https://www.youtube.com/watch?v=drZc4ZPcuvo
the after that it goes like the image attached
I fully reset the phone by fastboor method, it works for likr 5 mins the all bac again
I dont have money to take it to some cellphone repair shop.